scof Struct Reference

Spline coefficient struct returned by fscof(). More...

#include <estar.h>

Public Member Functions
	scof (int n)

Public Attributes
std::vector< double >	a
std::vector< double >	b
std::vector< double >	c
std::vector< double >	d

Detailed Description

Spline coefficient struct returned by fscof().

Holds the four cubic spline coefficient arrays for a natural cubic spline fit to the density correction data d[] on the knot grid x[]. The spline is evaluated by fbspol() using Horner's method:

delta(s) = ((d[i]*(s-x[i]) + c[i])*(s-x[i]) + b[i])*(s-x[i]) + a[i]

where i is the index of the bracketing interval.

Definition at line 189 of file estar.h.

Member Data Documentation

a

std::vector<double> scof::a

Zeroth-order spline coefficients (function values).

Definition at line 190 of file estar.h.

Referenced by fscof().

b

std::vector<double> scof::b

First-order spline coefficients.

Definition at line 191 of file estar.h.

Referenced by fscof().

c

std::vector<double> scof::c

Second-order spline coefficients.

Definition at line 192 of file estar.h.

Referenced by fscof().

d

std::vector<double> scof::d

Third-order spline coefficients.

Definition at line 193 of file estar.h.

Referenced by fscof().

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The documentation for this struct was generated from the following file:

• /home/rwtownson/EGSnrc/HEN_HOUSE/egs++/estar/estar.h